During the month of April 2012, the University of Utah reports 29 earthquakes were located in the Yellowstone National Park region. The largest was a magnitude 2.4 event on April 2 at 6:27 PM MDT, located about 5 miles north northwest of West Yellowstone, MT No earthquake swarms were detected in April.
Yellowstone earthquake activity continues at relatively low background levels.
Slow subsidence of the caldera, which began in early 2010, continues. Current deformation patterns at Yellowstone are well within historical norms.
Please see: http://www.uusatrg.utah.edu/ts_ysrp.html for a map of GPS stations in the Yellowstone vicinity. For a graph of daily GPS positions at White Lake, within the Yellowstone caldera, please see: http://pbo.unavco.org/station/overview/WLWY